1.\" $NetBSD: cpu_rootconf.9,v 1.8 2012/07/29 18:51:48 wiz Exp $ 2.\" 3.\" Copyright (c) 2002 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" This code is derived from software contributed to The NetBSD Foundation 7.\" by Gregory McGarry. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28.\" POSSIBILITY OF SUCH DAMAGE. 29.\" 30.Dd July 29, 2012 31.Dt CPU_ROOTCONF 9 32.Os 33.Sh NAME 34.Nm cpu_rootconf , 35.Nm rootconf , 36.Nm setroot 37.Nd root file system setup 38.Sh SYNOPSIS 39.In sys/types.h 40.In sys/systm.h 41.Ft void 42.Fn cpu_rootconf "void" 43.Ft void 44.Fn rootconf "void" 45.Ft void 46.Fn setroot "device_t bootdv" "int bootpartition" 47.Sh DESCRIPTION 48The 49.Fn cpu_rootconf 50is a machine-dependent interface invoked during system bootstrap to 51determine the root file system device and initialize machine-dependent 52file system state. 53.Fn cpu_rootconf 54provides the global variables 55.Fa booted_device , 56.Fa booted_partition , 57.Fa booted_startblk , 58and 59.Fa booted_nblks 60and invokes the machine-independent function 61.Fa rootconf 62which 63.Fa rootconf 64then calls the function 65.Fa setroot 66to record the boot/root device and the boot partition information 67for use in machine-independent code. 68.Pp 69For disk boot, if 70.Fa booted_nblks 71is not 0, then 72.Fa booted_startblk 73and 74.Fa booted_nblks 75are supposed to specify a disk wedge that is used as the root device. 76Otherwise the 77.Fa booted_partition 78is used. 79.Sh SEE ALSO 80.Xr dk 4 , 81.Xr boot 8 , 82.Xr boothowto 9 83